Initial Wings-OODT Integration

January 15, 2015

Wings Architecture Diagram

Wings-OODT Integration Overview

OODT Code Modifications

• File Manager Additions
  • API Additions
    • addParentForProductType - to support parent additions to data types in Wings Data Catalog
    • removeParentForProductType
    • removeProductType
    • addElementsForProductType - to support property additions to data types in Wings Data Catalog
    • removeElementsForProductType
  • XMLStructFactory Modifications
    • getProductTypeMapXmlDocument - fixed bug so it returns types that have no defined elements but have parents from which it can inherit elements
  • Validation Layer Additions
    • addParentForProductType - invocation from API function above
    • removeParentForProductType - invocation from API function above

• Workflow Manager Additions
  • API Additions
    • addTask - add a task to the repository (not currently used)
    • removeTask
    • executeWorkflow - similar to executeDynamicWorkflow, but takes as input a workflow object
  • WorkflowRepository Additions
    • removeTask - invocation from API function above

Wings Task Project

• WingsTask – newly defined
  • Subclass of WorkflowTaskInstance
    • run Function
    • Get Input/Output/Script Path/Arguments from Task Configuration Properties
    • Fetch Inputs from File Manager
    • Run the Wings Component Script with appropriate arguments
    • Move Outputs to specified data directory
    • Create a Task log for monitoring purposes

• WingsWorkflow – newly defined, combines workflow & component adapters
  • Helper class to create and run an OODT Workflow from a Wings execution-ready workflow
  • runDAXWorkflow Function
    • Parse an execution-ready workflow. In this case a DAX (Directed Acyclic graph Xml)
    • Create WingsTasks and add Configuration to specify Script Path/Input/Output/Arguments.
    • Create an OODT Workflow object and add WingsTasks to it
    • Ask Workflow Manager to run the OODT Workflow object

Wings Portal OODT Adapters (PHP)

• Use PHP/Java Bridge to make Java Client calls from PHP
• Data Adapter
  • SyncFromDC – bootstrapping File Manager from Wings Data Catalog
    • Sync Data Catalog (DC) with OODT File Manager
    • For Data Types, ask File Manager to addProductType with appropriate Parent Type and ProductType Elements
    • For Data Files, ask File Manager to addProduct and ingestProduct with appropriate References and Product Type
  • Map Wings Data Catalog interface editing functions to File Manager

• Workflow/Component Adapter
  • Encapsulated within the WingsWorkflow Class in the WingsTask Project

• Workflow Runner/Monitor
  • runOODTRequest.php
    • Use Wings Core to Plan and create Executable Workflow (DAX)
    • Call WingsWorkflow.runDAXWorkflow
    • Monitor Log Files for tracking workflow progress